FISHES OF NEW YORK 423 



211 Decapterus macarellus (Cuv. & Val.) 

 Mackerel Scad 



iJaranx macarellus Cuvier & Valenciennes, Hist. Nat. Poiss. IX, 40, 1833 



(Martinique); Gunthek, Cat. Fish. Brit. Mus. II, 426, 1860. 

 .Decapterus macarellus Poey, Enumeratio, 79, 1875; Jordan & Gilbert, 



Bull. 16, U. S, Nat. Mus. 433, 1SS3; Jordan & Etermann, Bull. 47, U. S. 



Nat. Mus. 909, 1896, pi. CXL. fig. 383, 19O0; Bean, Bull. Am. Mus. Nat. 



Hist. IX, 362, 1897; Smith, Bull. U. S. F. C. XVII, 97, 1898. 



Body elongate, fusiform, subterete, its greatest depth one 

 fifth of total length, its width one half the length of head; least 

 <iepth of caudal peduncle one eighth of length of head; head 

 long, subconical, snout obtusely pointed, lower jaw slightly pro- 

 jecting, length of head one fourth of total without caudal; max- 

 illary not quite reaching to front of orbit; the upper jaw equal 

 to length of snout; mandible extending to below front of eye, 

 its length equal to postorbital part of head; nostrils on top of 

 head, nearer eye than to tip of snout; eye large, one fourth the 

 length of head; interorbital space convex, its width equal to 

 -eye; a very low keel on top of head; no scales on nasal and pre- 

 orbital regions; gill rakers 8+30, the longest two thirds as 

 long as the eye. The spinous dorsal originates at a distance 

 from tip of snout equal to one third the total length without 

 caudal; the longest spine is one half as long as the head, the last 

 spine minute. The interspace between the two dorsals is one 

 half the diameter of eye. The second dorsal base equals one 

 third of total length to end of middle caudal rays; the anterior 

 one fourth of the fin is much higher than the rest, the longest 

 ray one third of length of head, the last ray one half as long as 

 the snout; the fin is followed by a single finlet of two rays, the 

 longer two thirds as long as the eye. The caudal fin is moder- 

 ^ateiy forked, the middle rays, from base of fin, four sevenths as 

 long as the outer, which are equal to snout and eye combined. 

 The anal fin is preceded by two short, sharp spines, the first 

 longer, one half as long as the snout; the rays begin under the 

 ninth ray of the second dorsal; the base is as long as the dis- 

 tance from ventral origin to preanal spines; the longest ray 

 4ibout one third as long as the head, the last ray one half as 

 long as the snout; the fin is followed by a single two-rayed finlet, 



